src/libstatgrab/network_stats.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: network_stats.c,v 1.49 2004/03/06 22:27:10 ats Exp $
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdlib.h>
#include <string.h>
#include "statgrab.h"
#include <time.h>
#ifdef SOLARIS
#include <kstat.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <sys/sockio.h>
#endif
#ifdef LINUX
#include <stdio.h>
#include <sys/types.h>
#include <regex.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <ctype.h>
#include "tools.h"
/* Stuff which could be defined by defining KERNEL, but 
 * that would be a bad idea, so we'll just declare it here
 */
typedef __uint8_t u8;
typedef __uint16_t u16;
typedef __uint32_t u32;
typedef __uint64_t u64;
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include <unistd.h>
#endif
#ifdef ALLBSD
#include <sys/types.h>
#include <sys/socket.h>
#include <ifaddrs.h>
#include <net/if.h>
#include <net/if_media.h>
#include <sys/ioctl.h>
#endif

static network_stat_t *network_stats=NULL;
static int interfaces=0;

void network_stat_init(int start, int end, network_stat_t *net_stats){

        for(net_stats+=start; start<end; start++){
                net_stats->interface_name=NULL;
                net_stats->tx=0;
                net_stats->rx=0;
                net_stats->ipackets=0;
                net_stats->opackets=0;
                net_stats->ierrors=0;
                net_stats->oerrors=0;
                net_stats->collisions=0;
                net_stats++;
        }
}

network_stat_t *network_stat_malloc(int needed_entries, int *cur_entries, network_stat_t *net_stats){

        if(net_stats==NULL){

                if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
                        return NULL;
                }
                network_stat_init(0, needed_entries, net_stats);
                *cur_entries=needed_entries;

                return net_stats;
        }


        if(*cur_entries<needed_entries){
                net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
                if(net_stats==NULL){
                        return NULL;
                }
                network_stat_init(*cur_entries, needed_entries, net_stats);
                *cur_entries=needed_entries;
        }

        return net_stats;
}


network_stat_t *get_network_stats(int *entries){

        static int sizeof_network_stats=0;      
        network_stat_t *network_stat_ptr;

#ifdef SOLARIS
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_named_t *knp;
#endif

#ifdef LINUX
        FILE *f;
        /* Horrible big enough, but it should be easily big enough */
        char line[8096];
        regex_t regex;
        regmatch_t line_match[9];
#endif
#ifdef ALLBSD
        struct ifaddrs *net, *net_ptr;
        struct if_data *net_data;
#endif

#ifdef ALLBSD
        if(getifaddrs(&net) != 0){
                return NULL;
        }

        interfaces=0;
        
        for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
                if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
                network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
                if(network_stats==NULL){
                        return NULL;
                }
                network_stat_ptr=network_stats+interfaces;
                
                if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
                network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
                if(network_stat_ptr->interface_name==NULL) return NULL;
                net_data=(struct if_data *)net_ptr->ifa_data;
                network_stat_ptr->rx=net_data->ifi_ibytes;
                network_stat_ptr->tx=net_data->ifi_obytes;
                network_stat_ptr->ipackets=net_data->ifi_ipackets;
                network_stat_ptr->opackets=net_data->ifi_opackets;
                network_stat_ptr->ierrors=net_data->ifi_ierrors;
                network_stat_ptr->oerrors=net_data->ifi_oerrors;
                network_stat_ptr->collisions=net_data->ifi_collisions;
                network_stat_ptr->systime=time(NULL);
                interfaces++;
        }
        freeifaddrs(net);       
#endif

#ifdef SOLARIS
        if ((kc = kstat_open()) == NULL) {
                return NULL;
        }

        interfaces=0;

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "net")) {
                        kstat_read(kc, ksp, NULL);

#ifdef SOL7
#define RLOOKUP "rbytes"
#define WLOOKUP "obytes"
#define VALTYPE value.ui32
#else
#define RLOOKUP "rbytes64"
#define WLOOKUP "obytes64"
#define VALTYPE value.ui64
#endif

                        if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
                                /* This is a network interface, but it doesn't
                                 * have the rbytes/obytes values; for instance,
                                 * the loopback devices have this behaviour
                                 * (although they do track packets in/out). */
                                continue;
                        }

                        network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
                        if(network_stats==NULL){
                                return NULL;
                        }
                        network_stat_ptr=network_stats+interfaces;
                        network_stat_ptr->rx=knp->VALTYPE;

                        if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
                                continue;
                        }
                        network_stat_ptr->tx=knp->VALTYPE;
                        if(network_stat_ptr->interface_name!=NULL){
                                free(network_stat_ptr->interface_name);
                        }
                        network_stat_ptr->interface_name=strdup(ksp->ks_name);

                        network_stat_ptr->systime=time(NULL);
                        interfaces++;
                }
        }
                
        kstat_close(kc);        
#endif
#ifdef LINUX
        f=fopen("/proc/net/dev", "r");
        if(f==NULL){
                return NULL;
        }
        /* read the 2 lines.. Its the title, so we dont care :) */
        fgets(line, sizeof(line), f);
        fgets(line, sizeof(line), f);


        if((regcomp(&regex, "^ *([^:]+): *([0-9]+) +([0-9]+) +([0-9]+) +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +([0-9]+) +([0-9]+) +([0-9]+) +[0-9]+ +[0-9]+ +([0-9]+)", REG_EXTENDED))!=0){
                return NULL;
        }

        interfaces=0;

        while((fgets(line, sizeof(line), f)) != NULL){
                if((regexec(&regex, line, 4, line_match, 0))!=0){
                        continue;
                }
                network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
                if(network_stats==NULL){
                        return NULL;
                }
                network_stat_ptr=network_stats+interfaces;

                if(network_stat_ptr->interface_name!=NULL){
                        free(network_stat_ptr->interface_name);
                }

                network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
                network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
                network_stat_ptr->tx=get_ll_match(line, &line_match[5]);
                network_stat_ptr->ipackets=get_ll_match(line, &line_match[3]);
                network_stat_ptr->opackets=get_ll_match(line, &line_match[6]);
                network_stat_ptr->ierrors=get_ll_match(line, &line_match[4]);
                network_stat_ptr->oerrors=get_ll_match(line, &line_match[7]);
                network_stat_ptr->collisions=get_ll_match(line, &line_match[8]);
                network_stat_ptr->systime=time(NULL);

                interfaces++;
        }
        fclose(f);
        regfree(&regex);

#endif

#ifdef CYGWIN
        return NULL;
#endif

        *entries=interfaces;

        return network_stats;   
}

long long transfer_diff(long long new, long long old){
#if defined(SOL7) || defined(LINUX) || defined(FREEBSD) || defined(DFBSD)
#define MAXVAL 4294967296LL
#else
#define MAXVAL 18446744073709551616LL
#endif
        long long result;
        if(new>=old){
                result = (new-old);
        }else{
                result = (MAXVAL+(new-old));
        }

        return result;

}

network_stat_t *get_network_stats_diff(int *entries) {
        static network_stat_t *diff = NULL;
        static int diff_count = 0;
        network_stat_t *src, *dest;
        int i, j, new_count;

        if (network_stats == NULL) {
                /* No previous stats, so we can't calculate a difference. */
                return get_network_stats(entries);
        }

        /* Resize the results array to match the previous stats. */
        diff = network_stat_malloc(interfaces, &diff_count, diff);
        if (diff == NULL) {
                return NULL;
        }

        /* Copy the previous stats into the result. */
        for (i = 0; i < diff_count; i++) {
                src = &network_stats[i];
                dest = &diff[i];

                if (dest->interface_name != NULL) {
                        free(dest->interface_name);
                }
                dest->interface_name = strdup(src->interface_name);
                dest->rx = src->rx;
                dest->tx = src->tx;
                dest->ipackets = src->ipackets;
                dest->opackets = src->opackets;
                dest->ierrors = src->ierrors;
                dest->oerrors = src->oerrors;
                dest->collisions = src->collisions;
                dest->systime = src->systime;
        }

        /* Get a new set of stats. */
        if (get_network_stats(&new_count) == NULL) {
                return NULL;
        }

        /* For each previous stat... */
        for (i = 0; i < diff_count; i++) {
                dest = &diff[i];

                /* ... find the corresponding new stat ... */
                for (j = 0; j < new_count; j++) {
                        /* Try the new stat in the same position first,
                           since that's most likely to be it. */
                        src = &network_stats[(i + j) % new_count];
                        if (strcmp(src->interface_name, dest->interface_name) == 0) {
                                break;
                        }
                }
                if (j == new_count) {
                        /* No match found. */
                        continue;
                }

                /* ... and subtract the previous stat from it to get the
                   difference. */
                dest->rx = transfer_diff(src->rx, dest->rx);
                dest->tx = transfer_diff(src->tx, dest->tx);
                dest->ipackets = transfer_diff(src->ipackets, dest->ipackets);
                dest->opackets = transfer_diff(src->opackets, dest->opackets);
                dest->ierrors = transfer_diff(src->ierrors, dest->ierrors);
                dest->oerrors = transfer_diff(src->oerrors, dest->oerrors);
                dest->collisions = transfer_diff(src->collisions, dest->collisions);
                dest->systime = src->systime - dest->systime;
        }

        *entries = diff_count;
        return diff;
}
/* NETWORK INTERFACE STATS */

void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){

        for(net_stats+=start; start<end; start++){
                net_stats->interface_name=NULL;
                net_stats->speed=0;
                net_stats->dup=UNKNOWN_DUPLEX;
                net_stats++;
        }
}

network_iface_stat_t *network_iface_stat_malloc(int needed_entries, int *cur_entries, network_iface_stat_t *net_stats){

        if(net_stats==NULL){

                if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
                        return NULL;
                }
                network_iface_stat_init(0, needed_entries, net_stats);
                *cur_entries=needed_entries;

                return net_stats;
        }


        if(*cur_entries<needed_entries){
                net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
                if(net_stats==NULL){
                        return NULL;
                }
                network_iface_stat_init(*cur_entries, needed_entries, net_stats);
                *cur_entries=needed_entries;
        }

        return net_stats;
}

network_iface_stat_t *get_network_iface_stats(int *entries){
        static network_iface_stat_t *network_iface_stats;
        network_iface_stat_t *network_iface_stat_ptr;
        static int sizeof_network_iface_stats=0;        
        int ifaces = 0;

#ifdef SOLARIS
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_named_t *knp;
        int sock;
#endif
#ifdef ALLBSD
        struct ifaddrs *net, *net_ptr;
        struct ifmediareq ifmed;
        struct ifreq ifr;
        int sock;
        int x;
#endif
#ifdef LINUX
        FILE *f;
        /* Horrible big enough, but it should be easily big enough */
        char line[8096];
        int sock;
#endif

#ifdef ALLBSD
        if(getifaddrs(&net) != 0){
                return NULL;
        }

        if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) return NULL;

        for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
                if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
                network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
                if(network_iface_stats==NULL){
                        return NULL;
                }
                network_iface_stat_ptr = network_iface_stats + ifaces;

                memset(&ifr, 0, sizeof(ifr));
                strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));

                if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
                        continue;
                }       
                if((ifr.ifr_flags & IFF_UP) != 0){
                        network_iface_stat_ptr->up = 1;
                }else{
                        network_iface_stat_ptr->up = 0;
                }

                if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
                network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
                if (network_iface_stat_ptr->interface_name == NULL) return NULL;

                network_iface_stat_ptr->speed = 0;
                network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                ifaces++;

                memset(&ifmed, 0, sizeof(struct ifmediareq));
                strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
                if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
                        /* Not all interfaces support the media ioctls. */
                        continue;
                }

                /* We may need to change this if we start doing wireless devices too */
                if( (ifmed.ifm_active | IFM_ETHER) != ifmed.ifm_active ){
                        /* Not a ETHER device */
                        continue;
                }

                /* Only intrested in the first 4 bits)  - Assuming only ETHER devices */
                x = ifmed.ifm_active & 0x0f;    
                switch(x){
                        /* 10 Mbit connections. Speedy :) */
                        case(IFM_10_T):
                        case(IFM_10_2):
                        case(IFM_10_5):
                        case(IFM_10_STP):
                        case(IFM_10_FL):
                                network_iface_stat_ptr->speed = 10;
                                break;
                        /* 100 Mbit conneections */
                        case(IFM_100_TX):
                        case(IFM_100_FX):
                        case(IFM_100_T4):
                        case(IFM_100_VG):
                        case(IFM_100_T2):
                                network_iface_stat_ptr->speed = 100;
                                break;
                        /* 1000 Mbit connections */
                        case(IFM_1000_SX):
                        case(IFM_1000_LX):
                        case(IFM_1000_CX):
#ifdef IFM_1000_TX
                        case(IFM_1000_TX): /* FreeBSD 4 and others? */
#endif
#ifdef IFM_1000_FX
                        case(IFM_1000_FX): /* FreeBSD 4 */
#endif
#ifdef IFM_1000_T
                        case(IFM_1000_T): /* FreeBSD 5 */
#endif
                                network_iface_stat_ptr->speed = 1000;
                                break;
                        /* We don't know what it is */
                        default:
                                network_iface_stat_ptr->speed = 0;
                                break;
                }

                if( (ifmed.ifm_active | IFM_FDX) == ifmed.ifm_active ){
                        network_iface_stat_ptr->dup = FULL_DUPLEX;
                }else if( (ifmed.ifm_active | IFM_HDX) == ifmed.ifm_active ){
                        network_iface_stat_ptr->dup = HALF_DUPLEX;
                }else{
                        network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                }

        }       
        freeifaddrs(net);
        close(sock);
#endif

#ifdef SOLARIS
        if ((kc = kstat_open()) == NULL) {
                return NULL;
        }

        if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
                return NULL;
        }

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "net")) {
                        struct ifreq ifr;

                        kstat_read(kc, ksp, NULL);

                        strncpy(ifr.ifr_name, ksp->ks_name, sizeof ifr.ifr_name);
                        if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
                                /* Not a network interface. */
                                continue;
                        }

                        network_iface_stats = network_iface_stat_malloc(ifaces + 1, &sizeof_network_iface_stats, network_iface_stats);
                        if (network_iface_stats == NULL) {
                                return NULL;
                        }
                        network_iface_stat_ptr = network_iface_stats + ifaces;
                        ifaces++;

                        if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
                        network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
                        if (network_iface_stat_ptr->interface_name == NULL) return NULL;

                        if ((ifr.ifr_flags & IFF_UP) != 0) {
                                network_iface_stat_ptr->up = 1;
                        } else {
                                network_iface_stat_ptr->up = 1;
                        }

                        if ((knp = kstat_data_lookup(ksp, "ifspeed")) != NULL) {
                                network_iface_stat_ptr->speed = knp->value.ui64 / (1000 * 1000);
                        } else {
                                network_iface_stat_ptr->speed = 0;
                        }

                        network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                        if ((knp = kstat_data_lookup(ksp, "link_duplex")) != NULL) {
                                switch (knp->value.ui32) {
                                case 1:
                                        network_iface_stat_ptr->dup = HALF_DUPLEX;
                                        break;
                                case 2:
                                        network_iface_stat_ptr->dup = FULL_DUPLEX;
                                        break;
                                }
                        }
                }
        }

        close(sock);
        kstat_close(kc);
#endif  
#ifdef LINUX
        f = fopen("/proc/net/dev", "r");
        if(f == NULL){
                return NULL;
        }

        /* Setup stuff so we can do the ioctl to get the info */
        if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
                return NULL;
        }

        /* Ignore first 2 lines.. Just headings */
        if((fgets(line, sizeof(line), f)) == NULL) return NULL;
        if((fgets(line, sizeof(line), f)) == NULL) return NULL;

        while((fgets(line, sizeof(line), f)) != NULL){
                char *name, *ptr;
                struct ifreq ifr;
                struct ethtool_cmd ethcmd;
                int err;

                /* Get the interface name */
                ptr = strchr(line, ':');
                if (ptr == NULL) continue;
                *ptr='\0';
                name = line;
                while(isspace(*(name))){
                        name++;
                }

                memset(&ifr, 0, sizeof ifr);
                strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);

                if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
                        continue;
                }

                /* We have a good interface to add */
                network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
                if(network_iface_stats==NULL){
                        return NULL;
                }
                network_iface_stat_ptr = network_iface_stats + ifaces;
                network_iface_stat_ptr->interface_name = strdup(name);
                if ((ifr.ifr_flags & IFF_UP) != 0) {
                        network_iface_stat_ptr->up = 1;
                } else {
                        network_iface_stat_ptr->up = 0;
                }

                memset(&ethcmd, 0, sizeof ethcmd);
                ethcmd.cmd = ETHTOOL_GSET;
                ifr.ifr_data = (caddr_t) &ethcmd;

                err = ioctl(sock, SIOCETHTOOL, &ifr);
                if (err == 0) {
                        network_iface_stat_ptr->speed = ethcmd.speed;

                        switch (ethcmd.duplex) {
                        case 0x00:
                                network_iface_stat_ptr->dup = FULL_DUPLEX;
                                break;
                        case 0x01:
                                network_iface_stat_ptr->dup = HALF_DUPLEX;
                                break;
                        default:
                                network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                        }
                } else {
                        /* Not all interfaces support the ethtool ioctl. */
                        network_iface_stat_ptr->speed = 0;
                        network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
                }

                ifaces++;
        }
        close(sock);
        fclose(f);
#endif
        *entries = ifaces;
        return network_iface_stats; 
}

Revision:	1.50
Committed:	Sat Mar 6 22:30:54 2004 UTC (20 years, 2 months ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.49:	+2 -2 lines
Log Message:	Make the network stats regexp simpler. Since /proc/net/dev is a fixed format, there's no need to use [[:space:]] and [[:digit:]]; a literal space and [0-9] will suffice.
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org
4	* Copyright (C) 2000-2004 i-scream
5	*
6	* This library is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU Lesser General Public
8	* License as published by the Free Software Foundation; either
9	* version 2.1 of the License, or (at your option) any later version.
10	*
11	* This library is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14	* Lesser General Public License for more details.
15	*
16	* You should have received a copy of the GNU Lesser General Public
17	* License along with this library; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19	* 02111-1307 USA
20	*
21	* $Id: network_stats.c,v 1.49 2004/03/06 22:27:10 ats Exp $
22	*/
23
24	#ifdef HAVE_CONFIG_H
25	#include "config.h"
26	#endif
27
28	#include <stdlib.h>
29	#include <string.h>
30	#include "statgrab.h"
31	#include <time.h>
32	#ifdef SOLARIS
33	#include <kstat.h>
34	#include <sys/sysinfo.h>
35	#include <sys/types.h>
36	#include <sys/socket.h>
37	#include <sys/ioctl.h>
38	#include <net/if.h>
39	#include <netinet/in.h>
40	#include <sys/sockio.h>
41	#endif
42	#ifdef LINUX
43	#include <stdio.h>
44	#include <sys/types.h>
45	#include <regex.h>
46	#include <sys/ioctl.h>
47	#include <sys/socket.h>
48	#include <net/if.h>
49	#include <ctype.h>
50	#include "tools.h"
51	/* Stuff which could be defined by defining KERNEL, but
52	* that would be a bad idea, so we'll just declare it here
53	*/
54	typedef __uint8_t u8;
55	typedef __uint16_t u16;
56	typedef __uint32_t u32;
57	typedef __uint64_t u64;
58	#include <linux/ethtool.h>
59	#include <linux/sockios.h>
60	#include <unistd.h>
61	#endif
62	#ifdef ALLBSD
63	#include <sys/types.h>
64	#include <sys/socket.h>
65	#include <ifaddrs.h>
66	#include <net/if.h>
67	#include <net/if_media.h>
68	#include <sys/ioctl.h>
69	#endif
70
71	static network_stat_t *network_stats=NULL;
72	static int interfaces=0;
73
74	void network_stat_init(int start, int end, network_stat_t *net_stats){
75
76	for(net_stats+=start; start<end; start++){
77	net_stats->interface_name=NULL;
78	net_stats->tx=0;
79	net_stats->rx=0;
80	net_stats->ipackets=0;
81	net_stats->opackets=0;
82	net_stats->ierrors=0;
83	net_stats->oerrors=0;
84	net_stats->collisions=0;
85	net_stats++;
86	}
87	}
88
89	network_stat_t network_stat_malloc(int needed_entries, int cur_entries, network_stat_t *net_stats){
90
91	if(net_stats==NULL){
92
93	if((net_stats=malloc(needed_entries * sizeof(network_stat_t)))==NULL){
94	return NULL;
95	}
96	network_stat_init(0, needed_entries, net_stats);
97	*cur_entries=needed_entries;
98
99	return net_stats;
100	}
101
102
103	if(*cur_entries<needed_entries){
104	net_stats=realloc(net_stats, (sizeof(network_stat_t)*needed_entries));
105	if(net_stats==NULL){
106	return NULL;
107	}
108	network_stat_init(*cur_entries, needed_entries, net_stats);
109	*cur_entries=needed_entries;
110	}
111
112	return net_stats;
113	}
114
115
116	network_stat_t get_network_stats(int entries){
117
118	static int sizeof_network_stats=0;
119	network_stat_t *network_stat_ptr;
120
121	#ifdef SOLARIS
122	kstat_ctl_t *kc;
123	kstat_t *ksp;
124	kstat_named_t *knp;
125	#endif
126
127	#ifdef LINUX
128	FILE *f;
129	/* Horrible big enough, but it should be easily big enough */
130	char line[8096];
131	regex_t regex;
132	regmatch_t line_match[9];
133	#endif
134	#ifdef ALLBSD
135	struct ifaddrs net, net_ptr;
136	struct if_data *net_data;
137	#endif
138
139	#ifdef ALLBSD
140	if(getifaddrs(&net) != 0){
141	return NULL;
142	}
143
144	interfaces=0;
145
146	for(net_ptr=net;net_ptr!=NULL;net_ptr=net_ptr->ifa_next){
147	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
148	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
149	if(network_stats==NULL){
150	return NULL;
151	}
152	network_stat_ptr=network_stats+interfaces;
153
154	if(network_stat_ptr->interface_name!=NULL) free(network_stat_ptr->interface_name);
155	network_stat_ptr->interface_name=strdup(net_ptr->ifa_name);
156	if(network_stat_ptr->interface_name==NULL) return NULL;
157	net_data=(struct if_data *)net_ptr->ifa_data;
158	network_stat_ptr->rx=net_data->ifi_ibytes;
159	network_stat_ptr->tx=net_data->ifi_obytes;
160	network_stat_ptr->ipackets=net_data->ifi_ipackets;
161	network_stat_ptr->opackets=net_data->ifi_opackets;
162	network_stat_ptr->ierrors=net_data->ifi_ierrors;
163	network_stat_ptr->oerrors=net_data->ifi_oerrors;
164	network_stat_ptr->collisions=net_data->ifi_collisions;
165	network_stat_ptr->systime=time(NULL);
166	interfaces++;
167	}
168	freeifaddrs(net);
169	#endif
170
171	#ifdef SOLARIS
172	if ((kc = kstat_open()) == NULL) {
173	return NULL;
174	}
175
176	interfaces=0;
177
178	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
179	if (!strcmp(ksp->ks_class, "net")) {
180	kstat_read(kc, ksp, NULL);
181
182	#ifdef SOL7
183	#define RLOOKUP "rbytes"
184	#define WLOOKUP "obytes"
185	#define VALTYPE value.ui32
186	#else
187	#define RLOOKUP "rbytes64"
188	#define WLOOKUP "obytes64"
189	#define VALTYPE value.ui64
190	#endif
191
192	if((knp=kstat_data_lookup(ksp, RLOOKUP))==NULL){
193	/* This is a network interface, but it doesn't
194	* have the rbytes/obytes values; for instance,
195	* the loopback devices have this behaviour
196	* (although they do track packets in/out). */
197	continue;
198	}
199
200	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
201	if(network_stats==NULL){
202	return NULL;
203	}
204	network_stat_ptr=network_stats+interfaces;
205	network_stat_ptr->rx=knp->VALTYPE;
206
207	if((knp=kstat_data_lookup(ksp, WLOOKUP))==NULL){
208	continue;
209	}
210	network_stat_ptr->tx=knp->VALTYPE;
211	if(network_stat_ptr->interface_name!=NULL){
212	free(network_stat_ptr->interface_name);
213	}
214	network_stat_ptr->interface_name=strdup(ksp->ks_name);
215
216	network_stat_ptr->systime=time(NULL);
217	interfaces++;
218	}
219	}
220
221	kstat_close(kc);
222	#endif
223	#ifdef LINUX
224	f=fopen("/proc/net/dev", "r");
225	if(f==NULL){
226	return NULL;
227	}
228	/* read the 2 lines.. Its the title, so we dont care :) */
229	fgets(line, sizeof(line), f);
230	fgets(line, sizeof(line), f);
231
232
233	if((regcomp(&regex, "^ ([^:]+): ([0-9]+) +([0-9]+) +([0-9]+) +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +[0-9]+ +([0-9]+) +([0-9]+) +([0-9]+) +[0-9]+ +[0-9]+ +([0-9]+)", REG_EXTENDED))!=0){
234	return NULL;
235	}
236
237	interfaces=0;
238
239	while((fgets(line, sizeof(line), f)) != NULL){
240	if((regexec(&regex, line, 4, line_match, 0))!=0){
241	continue;
242	}
243	network_stats=network_stat_malloc((interfaces+1), &sizeof_network_stats, network_stats);
244	if(network_stats==NULL){
245	return NULL;
246	}
247	network_stat_ptr=network_stats+interfaces;
248
249	if(network_stat_ptr->interface_name!=NULL){
250	free(network_stat_ptr->interface_name);
251	}
252
253	network_stat_ptr->interface_name=get_string_match(line, &line_match[1]);
254	network_stat_ptr->rx=get_ll_match(line, &line_match[2]);
255	network_stat_ptr->tx=get_ll_match(line, &line_match[5]);
256	network_stat_ptr->ipackets=get_ll_match(line, &line_match[3]);
257	network_stat_ptr->opackets=get_ll_match(line, &line_match[6]);
258	network_stat_ptr->ierrors=get_ll_match(line, &line_match[4]);
259	network_stat_ptr->oerrors=get_ll_match(line, &line_match[7]);
260	network_stat_ptr->collisions=get_ll_match(line, &line_match[8]);
261	network_stat_ptr->systime=time(NULL);
262
263	interfaces++;
264	}
265	fclose(f);
266	regfree(&regex);
267
268	#endif
269
270	#ifdef CYGWIN
271	return NULL;
272	#endif
273
274	*entries=interfaces;
275
276	return network_stats;
277	}
278
279	long long transfer_diff(long long new, long long old){
280	#if defined(SOL7) \|\| defined(LINUX) \|\| defined(FREEBSD) \|\| defined(DFBSD)
281	#define MAXVAL 4294967296LL
282	#else
283	#define MAXVAL 18446744073709551616LL
284	#endif
285	long long result;
286	if(new>=old){
287	result = (new-old);
288	}else{
289	result = (MAXVAL+(new-old));
290	}
291
292	return result;
293
294	}
295
296	network_stat_t get_network_stats_diff(int entries) {
297	static network_stat_t *diff = NULL;
298	static int diff_count = 0;
299	network_stat_t src, dest;
300	int i, j, new_count;
301
302	if (network_stats == NULL) {
303	/* No previous stats, so we can't calculate a difference. */
304	return get_network_stats(entries);
305	}
306
307	/* Resize the results array to match the previous stats. */
308	diff = network_stat_malloc(interfaces, &diff_count, diff);
309	if (diff == NULL) {
310	return NULL;
311	}
312
313	/* Copy the previous stats into the result. */
314	for (i = 0; i < diff_count; i++) {
315	src = &network_stats[i];
316	dest = &diff[i];
317
318	if (dest->interface_name != NULL) {
319	free(dest->interface_name);
320	}
321	dest->interface_name = strdup(src->interface_name);
322	dest->rx = src->rx;
323	dest->tx = src->tx;
324	dest->ipackets = src->ipackets;
325	dest->opackets = src->opackets;
326	dest->ierrors = src->ierrors;
327	dest->oerrors = src->oerrors;
328	dest->collisions = src->collisions;
329	dest->systime = src->systime;
330	}
331
332	/* Get a new set of stats. */
333	if (get_network_stats(&new_count) == NULL) {
334	return NULL;
335	}
336
337	/* For each previous stat... */
338	for (i = 0; i < diff_count; i++) {
339	dest = &diff[i];
340
341	/* ... find the corresponding new stat ... */
342	for (j = 0; j < new_count; j++) {
343	/* Try the new stat in the same position first,
344	since that's most likely to be it. */
345	src = &network_stats[(i + j) % new_count];
346	if (strcmp(src->interface_name, dest->interface_name) == 0) {
347	break;
348	}
349	}
350	if (j == new_count) {
351	/* No match found. */
352	continue;
353	}
354
355	/* ... and subtract the previous stat from it to get the
356	difference. */
357	dest->rx = transfer_diff(src->rx, dest->rx);
358	dest->tx = transfer_diff(src->tx, dest->tx);
359	dest->ipackets = transfer_diff(src->ipackets, dest->ipackets);
360	dest->opackets = transfer_diff(src->opackets, dest->opackets);
361	dest->ierrors = transfer_diff(src->ierrors, dest->ierrors);
362	dest->oerrors = transfer_diff(src->oerrors, dest->oerrors);
363	dest->collisions = transfer_diff(src->collisions, dest->collisions);
364	dest->systime = src->systime - dest->systime;
365	}
366
367	*entries = diff_count;
368	return diff;
369	}
370	/* NETWORK INTERFACE STATS */
371
372	void network_iface_stat_init(int start, int end, network_iface_stat_t *net_stats){
373
374	for(net_stats+=start; start<end; start++){
375	net_stats->interface_name=NULL;
376	net_stats->speed=0;
377	net_stats->dup=UNKNOWN_DUPLEX;
378	net_stats++;
379	}
380	}
381
382	network_iface_stat_t network_iface_stat_malloc(int needed_entries, int cur_entries, network_iface_stat_t *net_stats){
383
384	if(net_stats==NULL){
385
386	if((net_stats=malloc(needed_entries * sizeof(network_iface_stat_t)))==NULL){
387	return NULL;
388	}
389	network_iface_stat_init(0, needed_entries, net_stats);
390	*cur_entries=needed_entries;
391
392	return net_stats;
393	}
394
395
396	if(*cur_entries<needed_entries){
397	net_stats=realloc(net_stats, (sizeof(network_iface_stat_t)*needed_entries));
398	if(net_stats==NULL){
399	return NULL;
400	}
401	network_iface_stat_init(*cur_entries, needed_entries, net_stats);
402	*cur_entries=needed_entries;
403	}
404
405	return net_stats;
406	}
407
408	network_iface_stat_t get_network_iface_stats(int entries){
409	static network_iface_stat_t *network_iface_stats;
410	network_iface_stat_t *network_iface_stat_ptr;
411	static int sizeof_network_iface_stats=0;
412	int ifaces = 0;
413
414	#ifdef SOLARIS
415	kstat_ctl_t *kc;
416	kstat_t *ksp;
417	kstat_named_t *knp;
418	int sock;
419	#endif
420	#ifdef ALLBSD
421	struct ifaddrs net, net_ptr;
422	struct ifmediareq ifmed;
423	struct ifreq ifr;
424	int sock;
425	int x;
426	#endif
427	#ifdef LINUX
428	FILE *f;
429	/* Horrible big enough, but it should be easily big enough */
430	char line[8096];
431	int sock;
432	#endif
433
434	#ifdef ALLBSD
435	if(getifaddrs(&net) != 0){
436	return NULL;
437	}
438
439	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 0) return NULL;
440
441	for(net_ptr=net; net_ptr!=NULL; net_ptr=net_ptr->ifa_next){
442	if(net_ptr->ifa_addr->sa_family != AF_LINK) continue;
443	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
444	if(network_iface_stats==NULL){
445	return NULL;
446	}
447	network_iface_stat_ptr = network_iface_stats + ifaces;
448
449	memset(&ifr, 0, sizeof(ifr));
450	strncpy(ifr.ifr_name, net_ptr->ifa_name, sizeof(ifr.ifr_name));
451
452	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0){
453	continue;
454	}
455	if((ifr.ifr_flags & IFF_UP) != 0){
456	network_iface_stat_ptr->up = 1;
457	}else{
458	network_iface_stat_ptr->up = 0;
459	}
460
461	if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
462	network_iface_stat_ptr->interface_name = strdup(net_ptr->ifa_name);
463	if (network_iface_stat_ptr->interface_name == NULL) return NULL;
464
465	network_iface_stat_ptr->speed = 0;
466	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
467	ifaces++;
468
469	memset(&ifmed, 0, sizeof(struct ifmediareq));
470	strlcpy(ifmed.ifm_name, net_ptr->ifa_name, sizeof(ifmed.ifm_name));
471	if(ioctl(sock, SIOCGIFMEDIA, (caddr_t)&ifmed) == -1){
472	/* Not all interfaces support the media ioctls. */
473	continue;
474	}
475
476	/* We may need to change this if we start doing wireless devices too */
477	if( (ifmed.ifm_active \| IFM_ETHER) != ifmed.ifm_active ){
478	/* Not a ETHER device */
479	continue;
480	}
481
482	/* Only intrested in the first 4 bits) - Assuming only ETHER devices */
483	x = ifmed.ifm_active & 0x0f;
484	switch(x){
485	/* 10 Mbit connections. Speedy :) */
486	case(IFM_10_T):
487	case(IFM_10_2):
488	case(IFM_10_5):
489	case(IFM_10_STP):
490	case(IFM_10_FL):
491	network_iface_stat_ptr->speed = 10;
492	break;
493	/* 100 Mbit conneections */
494	case(IFM_100_TX):
495	case(IFM_100_FX):
496	case(IFM_100_T4):
497	case(IFM_100_VG):
498	case(IFM_100_T2):
499	network_iface_stat_ptr->speed = 100;
500	break;
501	/* 1000 Mbit connections */
502	case(IFM_1000_SX):
503	case(IFM_1000_LX):
504	case(IFM_1000_CX):
505	#ifdef IFM_1000_TX
506	case(IFM_1000_TX): /* FreeBSD 4 and others? */
507	#endif
508	#ifdef IFM_1000_FX
509	case(IFM_1000_FX): /* FreeBSD 4 */
510	#endif
511	#ifdef IFM_1000_T
512	case(IFM_1000_T): /* FreeBSD 5 */
513	#endif
514	network_iface_stat_ptr->speed = 1000;
515	break;
516	/* We don't know what it is */
517	default:
518	network_iface_stat_ptr->speed = 0;
519	break;
520	}
521
522	if( (ifmed.ifm_active \| IFM_FDX) == ifmed.ifm_active ){
523	network_iface_stat_ptr->dup = FULL_DUPLEX;
524	}else if( (ifmed.ifm_active \| IFM_HDX) == ifmed.ifm_active ){
525	network_iface_stat_ptr->dup = HALF_DUPLEX;
526	}else{
527	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
528	}
529
530	}
531	freeifaddrs(net);
532	close(sock);
533	#endif
534
535	#ifdef SOLARIS
536	if ((kc = kstat_open()) == NULL) {
537	return NULL;
538	}
539
540	if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
541	return NULL;
542	}
543
544	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
545	if (!strcmp(ksp->ks_class, "net")) {
546	struct ifreq ifr;
547
548	kstat_read(kc, ksp, NULL);
549
550	strncpy(ifr.ifr_name, ksp->ks_name, sizeof ifr.ifr_name);
551	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
552	/* Not a network interface. */
553	continue;
554	}
555
556	network_iface_stats = network_iface_stat_malloc(ifaces + 1, &sizeof_network_iface_stats, network_iface_stats);
557	if (network_iface_stats == NULL) {
558	return NULL;
559	}
560	network_iface_stat_ptr = network_iface_stats + ifaces;
561	ifaces++;
562
563	if (network_iface_stat_ptr->interface_name != NULL) free(network_iface_stat_ptr->interface_name);
564	network_iface_stat_ptr->interface_name = strdup(ksp->ks_name);
565	if (network_iface_stat_ptr->interface_name == NULL) return NULL;
566
567	if ((ifr.ifr_flags & IFF_UP) != 0) {
568	network_iface_stat_ptr->up = 1;
569	} else {
570	network_iface_stat_ptr->up = 1;
571	}
572
573	if ((knp = kstat_data_lookup(ksp, "ifspeed")) != NULL) {
574	network_iface_stat_ptr->speed = knp->value.ui64 / (1000 * 1000);
575	} else {
576	network_iface_stat_ptr->speed = 0;
577	}
578
579	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
580	if ((knp = kstat_data_lookup(ksp, "link_duplex")) != NULL) {
581	switch (knp->value.ui32) {
582	case 1:
583	network_iface_stat_ptr->dup = HALF_DUPLEX;
584	break;
585	case 2:
586	network_iface_stat_ptr->dup = FULL_DUPLEX;
587	break;
588	}
589	}
590	}
591	}
592
593	close(sock);
594	kstat_close(kc);
595	#endif
596	#ifdef LINUX
597	f = fopen("/proc/net/dev", "r");
598	if(f == NULL){
599	return NULL;
600	}
601
602	/* Setup stuff so we can do the ioctl to get the info */
603	if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
604	return NULL;
605	}
606
607	/* Ignore first 2 lines.. Just headings */
608	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
609	if((fgets(line, sizeof(line), f)) == NULL) return NULL;
610
611	while((fgets(line, sizeof(line), f)) != NULL){
612	char name, ptr;
613	struct ifreq ifr;
614	struct ethtool_cmd ethcmd;
615	int err;
616
617	/* Get the interface name */
618	ptr = strchr(line, ':');
619	if (ptr == NULL) continue;
620	*ptr='\0';
621	name = line;
622	while(isspace(*(name))){
623	name++;
624	}
625
626	memset(&ifr, 0, sizeof ifr);
627	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
628
629	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
630	continue;
631	}
632
633	/* We have a good interface to add */
634	network_iface_stats=network_iface_stat_malloc((ifaces+1), &sizeof_network_iface_stats, network_iface_stats);
635	if(network_iface_stats==NULL){
636	return NULL;
637	}
638	network_iface_stat_ptr = network_iface_stats + ifaces;
639	network_iface_stat_ptr->interface_name = strdup(name);
640	if ((ifr.ifr_flags & IFF_UP) != 0) {
641	network_iface_stat_ptr->up = 1;
642	} else {
643	network_iface_stat_ptr->up = 0;
644	}
645
646	memset(&ethcmd, 0, sizeof ethcmd);
647	ethcmd.cmd = ETHTOOL_GSET;
648	ifr.ifr_data = (caddr_t) &ethcmd;
649
650	err = ioctl(sock, SIOCETHTOOL, &ifr);
651	if (err == 0) {
652	network_iface_stat_ptr->speed = ethcmd.speed;
653
654	switch (ethcmd.duplex) {
655	case 0x00:
656	network_iface_stat_ptr->dup = FULL_DUPLEX;
657	break;
658	case 0x01:
659	network_iface_stat_ptr->dup = HALF_DUPLEX;
660	break;
661	default:
662	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
663	}
664	} else {
665	/* Not all interfaces support the ethtool ioctl. */
666	network_iface_stat_ptr->speed = 0;
667	network_iface_stat_ptr->dup = UNKNOWN_DUPLEX;
668	}
669
670	ifaces++;
671	}
672	close(sock);
673	fclose(f);
674	#endif
675	*entries = ifaces;
676	return network_iface_stats;
677	}
678